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  1. 8

    85-86 ECM for california truck

    Needs to have come from a truck with california emissions and a 700R4. The service number for the ECM is 1226865. Let me know what you have.
  2. 8

    CA-84-up auto tilt column $100

    Picked this up a couple years ago for a different truck I had at the time. Only reason I didnt use it was I didnt want to change my wiper switch from the dash to the column. This column has the wiper switch on the column. My current square already has a nice tilt so I dont need this one. Has no...
  3. 8

    need some quick help guys-85 GMC driveshaft lengths

    Ok I`ll try to keep this simple, 85 GMC SWB 700R4 with 10 bolt. Has a 1 piece driveshaft. Trans is shot. Was given a free short shaft TH350. What length drive shaft do I need? I`ve searched and get conflicting numbers. I know the 9" long tail shaft th350 is the same length at the 700R4 and the...
  4. 8

    85 GMC fuel gauge non-op

    It hasent really worked since I bought the truck. dude said it works sometimes but it has always read empty. I have switched back and forth on the tanks and both tanks read empty so not sure if it`s a gauge issue or sending units or something else. This is my daily driver so Im not going to be...
  5. 8

    85 GMC C1500- EGR valve question

    My truck has a code 54 and we figured out the EGR solenoid was sticking causing a misfire until it warmed up. since I have been driving it daily the misfire has gone away but it always runs a little rough. I removed the EGR valve and installed a block off plate and it runs much better and...
  6. 8

    Low cost trailing arm conversion

    CPP use to sell one but can't find a part number or a price for it. I know Port built and Hot Rods to He'll have kits but has anyone ever adapted the original early crossmembers to a square body frame? My truck rides super rough due to the way the PO lowered it but I still think coils ride...
  7. 8

    1985 305 mixture control solenoid wiring

    Does anyone have a diagram for the mixture control solenoid? At some point the harness side plug half was removed and they just used small connectors on the ends to plug into the sensor side of the plug. I have what looks like a pink wire and a black wire. I need to make sure these are on the...
  8. 8

    1996 5.7 vortec swap question-1985 GMC c1500

    Found a running 1996 chevy truck that I plan to use as a donor. Is there any issue with reusing my 1985 700R4? engine will be rebuilt stock with maybe a air intake. Didnt know if it would cause issues since its not electronic.
  9. 8

    OBD1 help

    Does anyone know where I can get a obd1 code reader that will clear codes? Just bought this 85 GMC c1500 and did a complete tune up and now the check engine light comes on after running for a few seconds. I know I can use a paper clip to jump to 2 terminals and count the flashes but I need to...
  10. 8

    thinking of going TBI

    Recently picked up a 85 GMC with a carbed 305 with all the smog crap California could stuff in there. Found a good deal on a 1995 TBI 350 with harness and computer. Any reason not to do this swap? Don't have the money for a Vortec or ls. Had a 90k5 and it ran pretty good so was thinking it would...
  11. 8

    Newbie from Sacramento

    Hey everyone. Just joined tonight. I`ve had 5 square but just picked up my current one a few days ago. Its a 85 GMC swb. Needs some work but its a runner and a good foundation to build on. Has power windows and locks, cruise, tilt, and a/c. Not all of it works though. Been lowered by the PO...

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